桩筏基础前排桩的工作参数分析研究

Study on Work Properties of Pile in Front of Raft Foundation Based on Parameter Change

针对桩筏基础力学性能分析,基于荷载分担比率和曲线的代表性,主要研究参数改变下前排中层桩的力学性能改变.利用有限元软件ANSYS10.0为平台来模拟原位桩筏基础试验,针对横向荷载受力,考虑合理的网格划分、桩-土之间的滑动及脱离、边界条件等因素的影响并进行了模型验证.通过改变模型参数如桩距、桩长和桩径参数较准确的反映了桩筏基础的受力机理,有较好的参考价值.

In view of the pile raft foundation mechanic performance and based on the load sharing and the representation of the curve, the main research focuses on the mechanical performance changes of the front middle pile under the conditions of the parameter changes. The finite element software ANSYS10. 0 as a platform is used to simulate the pile raft foundation. The factors such as the lateral load stress, reasonable meshing, the pile-soil sliding and out and the boundary conditions are taken into consideration to carry out the model verification. By changing the model parameters such as pile distance, pile length and pile diame ter of the pile raft foundation, the working performances are better shown, which provides good reference.